447 



of the back of the cephalothorax being raised into a large protu- 

 berance, occupying a full third part of the length of the back. The 

 posterior row of eyes is curved forwards, with the ej'es situated at 

 equal distances, these distances being rather greater than an eye's 

 diameter; the anterior row of eyes is but slightly curved backwards, 

 and the distances between its eyes almost equal, less than the dia- 

 meter of a lateral eye; the area of the four centre eyes is little 

 longer than it is broad behind. The clypeus is broadly depressed 

 transversely, and its height something greater than the length of the 

 area of the centre eyes, but not quite so great as the length of the 

 anterior row of eyes. The patellar joint of the palpus is long, half 

 as long again as the patella of the l:st pair; the tibial joint is about 

 two thirds the length of the patellar joint. For other particulars 

 see Blackwall's description. — An adult male of this species has been 

 given to me by Mr Cambridge. 



(Pag. 279.) Neriene tllberosa [^Erigone tuberosa (Blackw.) 1841]. 



Syn.: 1841. NERle'NE tuberosa Blackw., The differ, in the numb, of eyes, cet., 



p. 654. 



1847. Argus tuberosus Walck. , H. N. d. Ins. Apt., IV, p. 514. 



This species is closely allied to the two preceding, especially 

 E. vigilax; the male however is easily distinguished from E. vigilax 

 cf by its palpi being longer and by the back of the cephalothorax 

 being posteriorly, at its junction with the posterior slope, elevated into 

 a low, transverse protuberance, which is, though but a trifle, higher 

 than the pars cephalica, and separated from it by a long, slight, lon- 

 gitudinal depression. In E. gibbosa cf on the other hand the pro- 

 tuberance is considerably greater, much higher than the pars ce- 

 phalica, and strongly rounded off above; its cephalothorax is co- 

 vered with stout hairs in the angle between the protuberance and 

 the head. — The posterior row of eyes in E. tuberosa is slightly 

 curved forwards, the centre eyes a little farther distant (fully an 

 eye's diameter) from each other than from the lateral eyes. The an- 

 terior row curves but little backwards; the distances between its 

 eyes are nearly equal, and amount hardly to the semi-diameter of an 

 eye. The length of the area of the centre eyes is not greater than 

 its breadth behind; the clypeus is slightly depressed, a little higher 

 than the length of that area, but its height is not so great as the 



57 



